The following two tests failed in the JDK18 CI:

com/sun/jdi/RedefineStep.java
com/sun/jdi/RedefinePop.java

Here's a snippet from RedefineStep.java's log file:

----------System.out:(23/4735)*----------
Command line: [/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/macosx-x64-debug.jdk/jdk-18/fastdebug/bin/java -cp /System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/classes/0/com/sun/jdi/RedefineStep.d:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/src.full/open/test/jdk/com/sun/jdi:/System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/classes/0/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/src.full/open/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/6.1/1/bundles/jtreg-6.1+1.zip/jtreg/lib/javatest.jar:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/6.1/1/bundles/jtreg-6.1+1.zip/jtreg/lib/jtreg.jar -Xmx768m -XX:MaxRAMPercentage=12.5 -Djava.io.tmpdir=/System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/tmp -ea -esa -XX:+CreateCoredumpOnCrash -XX:+UseZGC -agentlib:jdwp=transport=dt_socket,server=y,suspend=y RedefineStepTarg ]
[debuggee]:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/macosx-x64-debug.jdk/jdk-18/fastdebug/bin/java -cp /System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/classes/0/com/sun/jdi/RedefineStep.d:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/src.full/open/test/jdk/com/sun/jdi:/System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/classes/0/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/src.full/open/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/6.1/1/bundles/jtreg-6.1+1.zip/jtreg/lib/javatest.jar:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/6.1/1/bundles/jtreg-6.1+1.zip/jtreg/lib/jtreg.jar -Xmx768m -XX:MaxRAMPercentage=12.5 -Djava.io.tmpdir=/System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/tmp -ea -esa -XX:+CreateCoredumpOnCrash -XX:+UseZGC -agentlib:jdwp=transport=dt_socket,server=y,suspend=y RedefineStepTarg
[debuggee] Listening for transport dt_socket at address: 52884
[jdb] java.net.SocketException: Connection reset
[jdb] at java.base/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:320)
[jdb] at java.base/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:347)
[jdb] at java.base/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:800)
[jdb] at java.base/java.net.Socket$SocketInputStream.read(Socket.java:966)
[jdb] at jdk.jdi/com.sun.tools.jdi.SocketTransportService.handshake(SocketTransportService.java:133)
[jdb] at jdk.jdi/com.sun.tools.jdi.SocketTransportService.attach(SocketTransportService.java:273)
[jdb] at jdk.jdi/com.sun.tools.jdi.GenericAttachingConnector.attach(GenericAttachingConnector.java:119)
[jdb] at jdk.jdi/com.sun.tools.jdi.SocketAttachingConnector.attach(SocketAttachingConnector.java:83)
[jdb] at jdk.jdi/com.sun.tools.example.debug.tty.VMConnection.attachTarget(VMConnection.java:557)
[jdb] at jdk.jdi/com.sun.tools.example.debug.tty.VMConnection.open(VMConnection.java:367)
[jdb] at jdk.jdi/com.sun.tools.example.debug.tty.Env.init(Env.java:63)
[jdb] at jdk.jdi/com.sun.tools.example.debug.tty.TTY.main(TTY.java:1167)
[jdb]
[jdb] Fatal error:
[jdb] Unable to attach to target VM.
[jdb]
=======================================
Exception thrown during test execution: waitForPrompt timed out after 600 seconds, looking for '[a-zA-Z0-9_-][a-zA-Z0-9_-]*\\[[1-9][0-9]*\\] [ >]*$', in 1 lines
=======================================
----------System.err:(16/1149)*----------
[debuggee] Debugger failed to attach: timeout during handshake
java.lang.RuntimeException: waitForPrompt timed out after 600 seconds, looking for '[a-zA-Z0-9_-][a-zA-Z0-9_-]*\\[[1-9][0-9]*\\] [ >]*$', in 1 lines
at lib.jdb.Jdb.waitForPrompt(Jdb.java:207)
at lib.jdb.Jdb.waitForPrompt(Jdb.java:157)
at lib.jdb.JdbTest.setup(JdbTest.java:128)
at lib.jdb.JdbTest.run(JdbTest.java:94)
at RedefineStep.main(RedefineStep.java:60)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)

JavaTest Message: Test threw exception: java.lang.RuntimeException: waitForPrompt timed out after 600 seconds, looking for '[a-zA-Z0-9_-][a-zA-Z0-9_-]*\\[[1-9][0-9]*\\] [ >]*$', in 1 lines
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: waitForPrompt timed out after 600 seconds, looking for '[a-zA-Z0-9_-][a-zA-Z0-9_-]*\\[[1-9][0-9]*\\] [ >]*$', in 1 lines
----------rerun:(41/7024)*----------


Here's a snippet from RedefinePop.java's log file:

----------System.out:(23/4731)*----------
Command line: [/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/macosx-x64-debug.jdk/jdk-18/fastdebug/bin/java -cp /System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/classes/1/com/sun/jdi/RedefinePop.d:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/src.full/open/test/jdk/com/sun/jdi:/System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/classes/1/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/src.full/open/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/6.1/1/bundles/jtreg-6.1+1.zip/jtreg/lib/javatest.jar:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/6.1/1/bundles/jtreg-6.1+1.zip/jtreg/lib/jtreg.jar -Xmx768m -XX:MaxRAMPercentage=12.5 -Djava.io.tmpdir=/System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/tmp -ea -esa -XX:+CreateCoredumpOnCrash -XX:+UseZGC -agentlib:jdwp=transport=dt_socket,server=y,suspend=y RedefinePopTarg ]
[debuggee]:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/macosx-x64-debug.jdk/jdk-18/fastdebug/bin/java -cp /System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/classes/1/com/sun/jdi/RedefinePop.d:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/src.full/open/test/jdk/com/sun/jdi:/System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/classes/1/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-18+26-1774/src.full/open/test/lib:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/6.1/1/bundles/jtreg-6.1+1.zip/jtreg/lib/javatest.jar:/System/Volumes/Data/mesos/work_dir/jib-master/install/jtreg/6.1/1/bundles/jtreg-6.1+1.zip/jtreg/lib/jtreg.jar -Xmx768m -XX:MaxRAMPercentage=12.5 -Djava.io.tmpdir=/System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S60189/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/9e63f0bb-d946-438b-9dab-7e2d56eaacb5/runs/0d4ba3a1-3fac-49ef-949a-b05dbd3deed5/testoutput/test-support/jtreg_open_test_jdk_jdk_jdi/tmp -ea -esa -XX:+CreateCoredumpOnCrash -XX:+UseZGC -agentlib:jdwp=transport=dt_socket,server=y,suspend=y RedefinePopTarg
[debuggee] Listening for transport dt_socket at address: 52883
[jdb] java.net.SocketException: Connection reset
[jdb] at java.base/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:320)
[jdb] at java.base/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:347)
[jdb] at java.base/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:800)
[jdb] at java.base/java.net.Socket$SocketInputStream.read(Socket.java:966)
[jdb] at jdk.jdi/com.sun.tools.jdi.SocketTransportService.handshake(SocketTransportService.java:133)
[jdb] at jdk.jdi/com.sun.tools.jdi.SocketTransportService.attach(SocketTransportService.java:273)
[jdb] at jdk.jdi/com.sun.tools.jdi.GenericAttachingConnector.attach(GenericAttachingConnector.java:119)
[jdb] at jdk.jdi/com.sun.tools.jdi.SocketAttachingConnector.attach(SocketAttachingConnector.java:83)
[jdb] at jdk.jdi/com.sun.tools.example.debug.tty.VMConnection.attachTarget(VMConnection.java:557)
[jdb] at jdk.jdi/com.sun.tools.example.debug.tty.VMConnection.open(VMConnection.java:367)
[jdb] at jdk.jdi/com.sun.tools.example.debug.tty.Env.init(Env.java:63)
[jdb] at jdk.jdi/com.sun.tools.example.debug.tty.TTY.main(TTY.java:1167)
[jdb]
[jdb] Fatal error:
[jdb] Unable to attach to target VM.
[jdb]
=======================================
Exception thrown during test execution: waitForPrompt timed out after 600 seconds, looking for '[a-zA-Z0-9_-][a-zA-Z0-9_-]*\\[[1-9][0-9]*\\] [ >]*$', in 1 lines
=======================================
----------System.err:(16/1147)*----------
[debuggee] Debugger failed to attach: timeout during handshake
java.lang.RuntimeException: waitForPrompt timed out after 600 seconds, looking for '[a-zA-Z0-9_-][a-zA-Z0-9_-]*\\[[1-9][0-9]*\\] [ >]*$', in 1 lines
at lib.jdb.Jdb.waitForPrompt(Jdb.java:207)
at lib.jdb.Jdb.waitForPrompt(Jdb.java:157)
at lib.jdb.JdbTest.setup(JdbTest.java:128)
at lib.jdb.JdbTest.run(JdbTest.java:94)
at RedefinePop.main(RedefinePop.java:73)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)

JavaTest Message: Test threw exception: java.lang.RuntimeException: waitForPrompt timed out after 600 seconds, looking for '[a-zA-Z0-9_-][a-zA-Z0-9_-]*\\[[1-9][0-9]*\\] [ >]*$', in 1 lines
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: waitForPrompt timed out after 600 seconds, looking for '[a-zA-Z0-9_-][a-zA-Z0-9_-]*\\[[1-9][0-9]*\\] [ >]*$', in 1 lines
----------rerun:(41/7017)*----------